StumbleUpon Terms of Service - July 27, 2011

StumbleUpon, Inc. (“StumbleUpon“, “us“, or “we“) provides in connection with the StumbleUpon Toolbar (the “Toolbar”) and the StumbleUpon website, located at, and all subdirectories or subextensions thereof (collectively, the “Website“) services that allow users to explore the Internet, find new websites that may be of interest to them, receive recommendations of websites from StumbleUpon, and join a community of individuals with similar tastes and interests (the “StumbleUpon Services”). The services offered by us include the StumbleUpon Services, the Website, and any other features, content, or, applications offered from time to time by us in connection with the StumbleUpon Services and Website (collectively, the “Services”).

These StumbleUpon Terms of Service (“Agreement“), along with StumbleUpon’s Privacy Policy, located at (“Privacy Policy“), set forth the legally binding terms for your use of the Services. By accessing and using the Services through the Toolbar or Website, you agree to comply with and be bound by this Agreement and the Privacy Policy, whether you are a “Visitor” (meaning you are simply browsing the Website) or you are a “StumbleUpon Member” (which means that you have registered with us). The term “User” refers to a Visitor or a StumbleUpon Member. This Agreement may be amended by StumbleUpon from time to time. If we make material changes to the Agreement, we will send you notice of the changes by sending a message to you at your StumbleUpon InBox accessible through your StumbleUpon account.

You agree that such amended Agreement will be effective 30 days after the notice is sent to you, and your continued access to the Website or use of the Services after that time shall constitute your acceptance of the amended Agreement. In order to participate in our StumbleUpon Services, you have to download the Toolbar and agree to the associated Toolbar License located at in order to set up a StumbleUpon Services profile (“StumbleUpon Profile“), and you may be required to download content and/or agree to additional terms and conditions. If you sign up for additional services, those additional services will be governed by the additional terms and unless otherwise provided by such additional terms and conditions they are hereby incorporated into this Agreement by reference.


1.1 Eligibility

By using the Services, you represent and warrant that: (a) all required registration information you submit is truthful and accurate; (b) you will maintain the accuracy of such information; (c) you are thirteen (13) years of age or older; and (d) your use of the Services does not violate any applicable law or regulation. Your StumbleUpon Profile may be deleted without warning if we have reason to believe that you do not meet eligibility requirements.

1.2 Password

When you sign up to become a StumbleUpon Member, you will also be asked to choose a username for your StumbleUpon Profile, and StumbleUpon will assign a password that you may change. You are entirely responsible for maintaining the confidentiality of your password and all use of your StumbleUpon Profile. You agree not to use the StumbleUpon Profile, username, or password of another StumbleUpon Member at any time. You agree to notify us immediately if you suspect any unauthorized use of your StumbleUpon Profile or access to your password.

1.3 Fees

You acknowledge that we reserve the right to charge for the Services and to change the fees from time to time in our discretion, upon notice to you at the then-current e-mail address stored in your StumbleUpon Profile. Currently, we only charge fees if you choose to become a Sponsor, as defined and described in Section 1.7 below. Upon using the Services, you will be responsible for the payment of any applicable fees, and shall pay such fees to us.

1.4 Restrictions

Multiple StumbleUpon accounts held by the same individual are subject to termination unless expressly authorized in advance and in writing by StumbleUpon. Accounts created with the primary intention to promote a product or service are considered “SPAM” and subject to termination unless expressly authorized in advance in writing by StumbleUpon.

1.5 Term

This Agreement shall remain in full force and effect while you use the Services or are a StumbleUpon Member. You may delete your StumbleUpon Profile and end your membership at any time, for any reason by following the instructions on the StumbleUpon Help Center ( We may terminate your membership for any reason, effective upon sending notice to you at the then-current e-mail address in your StumbleUpon Profile.

1.6 Effects of Termination

You understand that termination of this Agreement and your StumbleUpon Profile may involve deletion of your StumbleUpon Profile information from our live databases. We will not have any liability whatsoever to you for any termination of your StumbleUpon Profile or related deletion of your information. Finally, when an account is terminated, we reserve the right to re-issue the username they had selected (for the now deleted account).

1.7 Sponsorship

You may choose to become a sponsor of the Website and Services (“Sponsor“) by registering as a sponsor and paying the associated fees. If you become a Sponsor, you will be entitled to the additional functionality and privileges, and any additional restrictions or limitations.


The Toolbar and Website are made available to you for your personal, non-commercial use only (at home or at work). You may not modify, reproduce, distribute, publish, license, create derivative works from or sell any information or software associated with the Website, without first obtaining written permission from StumbleUpon by contacting us at the following email address: privacy AT Furthermore, you may not use the Toolbar or Website in any manner that could damage, disable, overburden, or impair the Services (e.g., you may not use the Toolbar or Website in an automated manner), nor may you use Toolbar or Website in any manner that could interfere with any other party’s use and enjoyment of the Services. You may not use any third party toolbars, software, or scripts to access the Website or the Websites underlying technology or software.


3.1 Ownership

You acknowledge that StumbleUpon owns all right, title and interest in and to the Services, including without limitation, the Toolbar, Website, and all underlying software and technology, including without limitation all Intellectual Property Rights. “Intellectual Property Rights” means any and all rights existing from time to time under patent law, copyright law, trade secret law, trademark law, unfair competition law, and any and all other proprietary rights, and any and all applications, renewals, extensions and restorations thereof, now or hereafter in force and effect worldwide.

3.2 Content

We do not claim ownership in any “Content” (which means any and all postings, e-mails, messages, recommendations, comments, text, files, images, photos, video, sounds, works of authorship, feedback, bug reports, or other materials) that you post on, deliver to, or otherwise make available to the Services, but to be able to legally provide you with and promote the Services, we have to have certain rights to use such Content in connection with the Services, as set forth below. In return, we also grant you certain use rights to the Content that we (or our licensors) own and use to provide the Services to you and other Users, as set forth below.

3.3 Your Content

By posting any Content on the Services, you hereby grant to us an unrestricted, irrevocable, perpetual, non-exclusive, fully-paid and royalty-free, license (with the right to sublicense through unlimited levels of sublicensees) to use, copy, perform, display, create derivative works of, and distribute such Content in any and all media or distribution method (now known or later developed) throughout the world. Additionally, by posting any Content on the Services and making your Content available to others (“Third Parties”) via RSS distribution, you hereby grant to all Third Parties an unrestricted, irrevocable, perpetual, non-exclusive, fully-paid and royalty-free, license (with the right to sublicense through unlimited levels of sublicensees) to copy, display, and distribute such Content in any and all media (now known or later developed) throughout the world. No compensation will be paid with respect to the Content that you submit, upload, post, transmit or otherwise make available through the Services. You should only upload Content to the Services that you are comfortable sharing with others under the terms and conditions set forth herein. Other users of the Service will be able to view any Content you post to the Services, subject to your limited ability to prevent access to your Content by changing your account preferences and settings.

3.4 Restrictions

Except for that Content that is owned by you, that is in the public domain, for which you have been given written permission, or as expressly permitted under this Agreement, you agree not to (i) modify, publish, transmit, distribute, perform, sell, or create derivative works based on the Content and Services; and (ii) rent, lease, loan, or sell access to the Services; (iii) decompile, reverse engineer, or copy any Content (other than the Content you provide) or the Services for which the source code is not provided to you. You also agree to not remove, obscure, or alter StumbleUpon’s copyright notice, trademarks, or other proprietary rights notices affixed to or contained within Toolbar. You will not: (i) cover or obscure the banner advertisements on your StumbleUpon Profile page, or any StumbleUpon page via HTML/CSS, scripting, or any other means, if any or (ii) interfere with, disrupt, or create an undue burden on the Services or the networks or services connected to the Services.

3.5 Objectionable Content

We reserve the right to remove content (including websites) that we determine in our sole discretion are unlawful, fraudulent, threatening, libelous, defamatory, obscene or otherwise objectionable. Any account posting or hosting objectionable content or recommending objectionable websites are subject to termination. Also, we reserve the right to remove content that we determine in our sole discretion is primarily intended to promote a product or service.


You are solely responsible for any and all Content that is published or displayed (“posted“, as used herein) by or through your StumbleUpon Profile on the Services, including any e-mail, and for your interactions with other Users.

4.1 Prohibited Content

You agree that you will not post any Prohibited Content. “Prohibited Content” includes, without limitation, Content that: (i) is offensive or promotes racism, bigotry, hatred or physical harm of any kind; (ii) harasses or advocates harassment of another person; (iii) involves the transmission of “junk mail,” “chain letters,” or unsolicited mass mailing, or “spamming,”; (iv) is false or misleading or promotes, endorses or furthers illegal activities; (v) promotes, copies, performs or distributes an illegal or unauthorized copy of another person’s work that is protected by copyright or trade secret law; (vi) is involved in the exploitation of persons under the age of eighteen (18) in a sexual or violent manner, or solicits personal information from anyone under eighteen (18); (vii) contains viruses, Trojan horses, worms, time bombs, cancelbots, corrupted files, or similar software; or (viii) otherwise violates the terms of this Agreement or creates liability for us. You represent and warrant that: (a) you own the Content posted by you on the Service or otherwise have the right to grant the license set forth in this Agreement, and (b) your Content does not violate the privacy rights, publicity rights, copyright rights, or other rights of any person.

4.2 Breach

Any use of the Services in violation of this Agreement may result in, among other options, termination or suspension of your rights to use the Services. In order to cooperate with legitimate governmental requests, subpoenas or court orders, to protect our systems and customers, or to ensure the integrity and operation of our business and systems, we may access and disclose any information and Content we consider necessary or appropriate, including, without limitation, StumbleUpon Profile information (i.e. name, e-mail address, etc.), IP addressing and traffic information, usage history, and posted Content.

4.3 Enforcement by Us

We have the right (but not the obligation) to investigate or review any Content and delete (or modify) any Content that in our sole judgment violates this Agreement or which is Prohibited Content, or may otherwise violate the rights, harm, or threaten the safety of any User or any other person, or create liability for us or any User.

4.4 Photographs

You may not post a photograph of another person without that person’s permission.

4.5 Antivirus Software

You are responsible for installing, maintaining and using effective anti-virus and spyware prevention technologies, and StumbleUpon is not responsible for third-party websites that contain or deliver viruses, spyware, malware, or other harmful content or code.


5.1 Third Party Content

Content from other Users, advertisers, and other third parties is made available to you through the Services. Because we do not control such Content, you agree that we are not responsible for any such Content, including advertising and information about third party products or services. Because we do not have control over such Content, we make no guarantees about the accuracy, currency, suitability, or quality of the information in such Content, and we assume no responsibility for unintended, objectionable, inaccurate, misleading, or unlawful Content made available by other Users, advertisers, and third parties. By choosing your preferences, you can designate types and categories of content you prefer to access, but StumbleUpon cannot guarantee that you will only access the types and categories of information you designate. Some of the content served by Stumbleupon will be from affiliated merchant sites. Sales that occur through these affiliated sites may generate a commission payable to StumbleUpon.

5.2 Responsibility

Your interactions with other Users on the Services or with advertisers, including payment and delivery of goods or services, and any other terms, conditions, warranties or representations associated with such dealings, are solely between you and the other User or the advertiser. You agree that we will not be responsible for any loss or damage incurred as the result of any such dealings or with respect to any other User’s use or disclosure of your personally identifiable information. If there is a dispute between you and any third party (including any User), we are under no obligation to become involved; however, we reserve the right, but have no obligation, to monitor disputes between you and other Users.

5.3 Third-Party Websites and Partner Communities

The Services may contain links to third-party websites (“Third-Party Websites“) (a) placed by us as a service to those interested in this information; or (b) posted by other Users. We may also place links or enable interoperability to other social networking communities (“Partner Communities“) or use other means to connect the StumbleUpon Services to such Partner Communities to give you more possibilities. You use all such links to Third-Party Websites and Partner Communities at your own risk. To the extent such links are provided by us, they are provided only as a convenience, and such link to a Third-Party Website or Partner Community does not imply our endorsement, adoption or sponsorship of, or affiliation with, such Third-Party Website or Partner Community. We accept no responsibility for reviewing changes or updates to, or the quality, content, policies, nature or reliability of Third-Party Websites or Partner Communities, or websites linking to the Website. You should review applicable terms and policies, including privacy and data gathering practices, of any Third-Party Website and Partner Communities, and should make whatever investigation you feel necessary or appropriate before proceeding with any transaction with any third party.


It is our policy to terminate membership privileges of any StumbleUpon Member who repeatedly infringes copyright upon prompt notification to us by the copyright owner or the copyright owner’s legal agent. Without limiting the foregoing, if you believe that your work has been copied and posted on the Services in a way that constitutes copyright infringement, please provide our Copyright Agent with the following information: (i) an electronic or physical signature of the person authorized to act on behalf of the owner of the copyright interest; (ii) a description of the copyrighted work that you claim has been infringed; (iii) a description of where the material that you claim is infringing is located on the Services; (iv) your address, telephone number, and e-mail address; (v) a written statement by you that you have a good faith belief that the disputed use is not authorized by the copyright owner, its agent, or the law; (vi) a statement by you, made under penalty of perjury, that the above information in your notice is accurate and that you are the copyright owner or authorized to act on the copyright owner’s behalf. Contact information for our Copyright Agent for notice of claims of copyright infringement is as follows: StumbleUpon, Inc. Attn: Copyright Agent P.O. Box 191675 San Francisco, CA 94119 phone: 415-979-0640 fax: 415-896-2600 email: copyright AT


StumbleUpon disclaims any responsibility for any harm resulting from your use of Toolbar or Services. StumbleUpon disclaims any responsibility for harm resulting from your use of the Services. The Services are provided “as is,” with no warranties whatsoever. StumbleUpon and the StumbleUpon licensors expressly disclaim to the fullest extent permitted by law all express, implied, and statutory warranties, including without limitation the warranties of merchantability, fitness for a particular purpose, title, and noninfringement of proprietary rights. StumbleUpon and the StumbleUpon licensors disclaim any warranties regarding the security, reliability, timeliness and performance of the Services. You understand and agree that you use the Services at your own discretion and risk and that you will be solely responsible for any damages to your computer system or loss of data that results from the use of the Services. Some states or other jurisdictions do not allow the exclusion of implied warranties, so the above exclusions may not apply to you. You may also have other rights that vary from state to state and jurisdiction to jurisdiction.


8.1 Disclaimer

Under no circumstances shall StumbleUpon be liable to any user on account of that user’s use or misuse of the Services. Such limitation of liability shall apply to prevent recovery of indirect, incidental, consequential, special, exemplary, and punitive damages whether such claim is based on warranty, contract, tort (including negligence), or otherwise, (even if StumbleUpon has been advised of the possibility of such damages). Such limitation of liability shall apply whether the damages arise from use or misuse of and reliance on the Services, from inability to use toolbar and Services, or from the interruption, suspension, or termination of toolbar and Services (including such damages incurred by third parties). Such limitation shall apply notwithstanding a failure of essential purpose of any limited remedy and to the fullest extent permitted by law.

8.2 Limitation

Notwithstanding anything to the contrary contained herein, our liability to you for any damages arising from or related to (for any cause whatsoever and regardless of the form of the action), will at all times be limited to the greater of fifty us dollars ($50) and the amounts you paid to us in the twelve (12) months prior to the accrual of the claim. Some states or other jurisdictions do not allow the exclusion or limitation of liability for incidental or consequential damages, so the above limitations and exclusions may not apply to you.

8.3 Release

You hereby release us, our officers, employees, agents and successors from claims, demands any and all losses, damages, rights, claims, and actions of any kind including, without limitation, personal injuries, death, and property damage, that is either directly or indirectly related to or arises from (i) any interactions with other Users, or (ii) your participation in any of our offline events. If you are a California resident, you hereby waive California Civil Code Section 1542, which states: “A general release does not extend to claims which the creditor does not know or suspect to exist in his favor at the time of executing the release, which, if known by him must have materially affected his settlement with the debtor.”


If you have comments on StumbleUpon Toolbar and Website or ideas on how to improve it, please contact us at Please note that by doing so, you also grant StumbleUpon permission to use and incorporate your ideas or comments into StumbleUpon Toolbar and Website without further compensation.


If a dispute arises between you and StumbleUpon, our goal is to provide you with a neutral and cost effective means of resolving the dispute quickly. Accordingly, you and StumbleUpon agree that we will resolve any claim or controversy at law or equity that arises out of this Agreement or our services (a “Claim”) in accordance with one of the paragraphs below or as we and you otherwise agree in writing. Before resorting to these alternatives, we strongly encourage you to first contact us directly to seek a resolution by going to the “Contact Us” page located at We will consider reasonable requests to resolve the dispute through alternative dispute resolution procedures, such as mediation or arbitration, as alternatives to litigation. Law and Forum for Disputes – This Agreement shall be governed in all respects by the laws of the State of California without giving effect to any conflicts of laws principles that require the application of the law of a different jurisdiction. You agree that any claim or dispute you may have against StumbleUpon must be resolved by a court located in Santa Clara County, California, except as otherwise agreed by the parties or as described in the Arbitration Option paragraph below. You agree to submit to the personal jurisdiction of the courts located within Santa Clara County, California for the purpose of litigating all such claims or disputes. Arbitration Option – For any claim (excluding claims for injunctive or other equitable relief) where the total amount of the award sought is less than $10,000, the party requesting relief may elect to resolve the dispute in a cost effective manner through binding non-appearance-based arbitration. In the event a party elects arbitration, they shall initiate such arbitration through an established alternative dispute resolution (“ADR”) provider mutually agreed upon by the parties. The ADR provider and the parties must comply with the following rules: a) the arbitration shall be conducted by telephone, online and/or be solely based on written submissions, the specific manner shall be chosen by the party initiating the arbitration; b) the arbitration shall not involve any personal appearance by the parties or witnesses unless otherwise mutually agreed by the parties; and c) any judgment on the award rendered by the arbitrator may be entered in any court of competent jurisdiction. Improperly Filed Claims – All claims must be resolved in accordance with this Resolution of Disputes Section. All claims filed or brought contrary to the Resolution of Disputes Section shall be considered improperly filed. Should you file a claim contrary to the Resolution of Disputes Section, StumbleUpon may recover attorneys’ fees and costs up to $1000, provided that StumbleUpon has notified you in writing of the improperly filed claim, and you have failed to promptly withdraw the claim.


StumbleUpon, Inc. is located at P.O. Box 191675, San Francisco, CA 94119. If you are a California resident, you may report complaints to the Complaint Assistance Unit of the Division of Consumer Services of the California Department of Consumer Affairs by contacting them in writing at 400 R Street, Sacramento, CA 95814, or by telephone at (800) 952-5210. You should note that parental control protections (such as computer hardware, software, or filtering services) are commercially available that may assist you in limiting access to material that is harmful to minors. Current providers of such protections can be found at


If for any reason a court of competent jurisdiction finds any provision or portion of these Agreement to be unenforceable, the remainder of the Agreement will continue in full force and effect. Sections 2-5, 7, 8, 10, and 11 of this Agreement will survive any termination of this agreement. This Agreement constitutes the entire agreement between the parties with respect to the subject matter hereof and supersede and replace all prior or contemporaneous understandings or agreements, written or oral, regarding such subject matter. Any waiver of any provision of these Agreement will be effective only if in writing and signed by StumbleUpon.
This document was last revised July 27, 2011.